F
freedomrun
TN-C-S DOMESTIC. I have been asked to replace an old domestic CU with a new CU. I have performed the IR tests and all comply, all socket outlets are on a Radial configuration with 20A protection & 30mA RCD with 2.5mm squared T&E. The circuit comprises of 4 single and 1 double Socket and Central Heating controls via a switched FCU, an unswitched FCU supplying upstairs a further (cable is 2.5 T&E) 3 double sockets and a single socket, another FCU supplying two way switching for a couple of wall lights, another FCU supplying an outside PIR Flood light and another FCU supplying an outbuilding with 1.5mm SWA cable, the outbuilding has a switched FCU supplying a bulkhead light, another FCU supplying 2 double sockets and another FCU connected to a PIR outside Flood. All the cables seem to have suitable protection and all pass IR testing, the RCD complies and although this is not how i would install a circuit...... this is what i have to work with. I have also stated to the owner that i would be happier connecting the outbuilding as a seperate sub (sub main - requires a sub board and additional cable between both CU's), he will not pay to have a new CU in the outbuilding and replace the house CU too. I may be overlooking something obvious, but is there any reason why the circuit as i have outlined is not compliant in how it is laid out, with all these FCU's everywhere - the customer only wants the CU changed and the EIC with it. Thanks in advance.